TY - JOUR
T1 - SPS synthesis and consolidation of TiAl alloys from elemental powders
T2 - Microstructure evolution
AU - Lagos, M. A.
AU - Agote, I.
PY - 2013
Y1 - 2013
N2 - Some works have studied the sintering of TiAl by means of Spark Plasma Sintering (SPS) and it is believed that it is possible to obtain very fine microstructures and very interesting mechanical properties. As raw materials, normally pre-alloyed powders have been used, obtained by atomization or mechanical alloying. However, few works have studied the consolidation of elemental powders. This work presents the synthesis and densification of TiAl-based alloys by means of Spark Plasma Sintering (SPS) using elemental powders as raw materials. The selected composition was Ti-48Al-2Cr-2Nb. The densification process, the evolution of the microstructure with the temperature and the diffusion of the elements (including heavy metals Cr and Nb) are presented. In addition, SPS products are compared with TiAl alloys from elemental powders obtained by conventional methods.
AB - Some works have studied the sintering of TiAl by means of Spark Plasma Sintering (SPS) and it is believed that it is possible to obtain very fine microstructures and very interesting mechanical properties. As raw materials, normally pre-alloyed powders have been used, obtained by atomization or mechanical alloying. However, few works have studied the consolidation of elemental powders. This work presents the synthesis and densification of TiAl-based alloys by means of Spark Plasma Sintering (SPS) using elemental powders as raw materials. The selected composition was Ti-48Al-2Cr-2Nb. The densification process, the evolution of the microstructure with the temperature and the diffusion of the elements (including heavy metals Cr and Nb) are presented. In addition, SPS products are compared with TiAl alloys from elemental powders obtained by conventional methods.
KW - A. Intermetallics
KW - A. Titanium aluminides
KW - C. Powder metallurgy
KW - C. Reaction synthesis
KW - G. Aerospace constructional uses
UR - http://www.scopus.com/inward/record.url?scp=84873638124&partnerID=8YFLogxK
U2 - 10.1016/j.intermet.2013.01.006
DO - 10.1016/j.intermet.2013.01.006
M3 - Article
AN - SCOPUS:84873638124
SN - 0966-9795
VL - 36
SP - 51
EP - 56
JO - Intermetallics
JF - Intermetallics
ER -